Abstract: An adsorbent for ink jet use arranged in a position to be in contact with ink, having the higher capability of adsorption with respect to hydrophobic substance contained in ink than colorant therein. Then, an ink retaining container comprises an ink retaining portion for retaining ink to be supplied to an ink jet head, an ink supply opening which becomes the ink supply portion from the ink retaining portion to the head, an atmospheric communication opening for communicating the ink retaining portion with the air outside. This ink retaining container is provided with the above-mentioned adsorption member arranged in a position to be in contact with ink in it. With the adsorbent and the ink retaining container thus arranged, it is made possible to perform ink jet recording with excellent print characteristics by effectively removing the hydrophobic substance eluted form the ink absorbent in the ink retaining container.

Abstract: The ink jet recording apparatus of this invention comprises a means 67 for heating a record material to a predetermined temperature range at the position of recording, a recording head 41 for ejecting ink 46 from an ink ejection orifice 49 toward the record material to perform recording, the ink containing a substance having thickening properties when undergoing heat, and/or a substance having a cloud point for the heat; a means 69 for measuring the duration for which the recording head resides at the position of recording; and means for controlling the duration of residence in accordance with the properties of the ink to prevent the ejection function being impaired owing to the heating of the surroundings of the ink ejection orifice.

Abstract: The ink jet recording apparatus of this invention comprises a means 67 for heating a record material to a predetermined temperature range at the position of recording, a recording head 41 for ejecting ink 46 from an ink ejection orifice 49 toward the record material to perform recording, the ink containing a substance having thickening properties when undergoing heat, and/or a substance having a cloud point for the heat; a means 69 for measuring the duration for which the recording head resides at the position of recording; and means for controlling the duration of residence in accordance with the properties of the ink to prevent the ejection function being impaired owing to the heating of the surroundings of the ink ejection orifice.

Abstract: Disclosed herein is a water-based ink for ink-jet recording, comprising a reaction product between a monosaccharide, disaccharide or polysaccharide and a reactive dye, wherein the monosaccharide has 1 to 3 primary amino groups, 1 to 3 secondary amino groups or 1 to 3 quaternary ammonium groups, the disaccharide has 1 to 3 primary amino groups, 1 to 3 secondary amino groups or 1 to 3 quaternary ammonium group, and the polysaccharide has a weight average moleculare weight of at most 4,000.

Abstract: Provided is an ink, having a surface tension of not less than 30 mN/m and a viscosity of not more than 5 mpa.cndot.s, and comprising a water-soluble dye, water, at least one compound selected from the Compound Groups A and B, and at least one compound selected from the Compound Group C.

Abstract: Disclosed herein is a recording ink suitable for use in image recording together with a liquid composition containing a cationic substance, wherein the recording ink comprises a coloring material and a water-soluble polymeric compound which exhibits nonionic properties in the ink and has an alicyclic, nitrogen-containing heterocycle.

Abstract: An object of the present invention is to provide an ink, and ink jet recording method and apparatus using the ink which has excellent dispersion stability, discharge stability and recovery properties, and which can be kept in the weak alkali region even if it contains carbon black with low pH, which is generally considered to be difficult to handle and which can obtain a high-density image. The ink contains acid carbon black having a volatile content within the range 3.5 to 8% by weight, and a water-soluble resin having a weight average molecular weight within the range of 3,000 to 30,000, both of which are dissolved in an aqueous liquid medium, and a compound represented by the following formula (I), wherein the ratio by weight between the acid carbon black and the water-soluble resin is within the range of 3:1 to 10:1.R.sub.1 R.sub.2 NCONHCH.sub.2 CH.sub.2 OH (I)wherein R.sub.1 and R.sub.2 each is hydrogen or C.sub.n H.sub.2n OH, n is 2 or 3, with the proviso that R.sub.1 and R.sub.

Abstract: Disclosed herein is an ink comprising a recording agent, succinylated carboxymethylchitosan and a liquid medium.

Abstract: Provided is an ink containing a recording agent and a liquid medium capable of dissolving or dispersing the recording agent, wherein said ink comprises a compound represented by the formulaR.sub.1 R.sub.2 NCONHCH.sub.2 CH.sub.2 OHwherein R.sub.1 and R.sub.2 each represent hydrogen or C.sub.n H.sub.2n OH, where n is 2 or 3, provided that R.sub.1 and R.sub.2 are not hydrogen at the same time, and has a pH of not less than 7 to less than 10.

Abstract: A recording medium comprises a surface layer composed mainly of aluminum oxide particles and a lower layer having ink absorptivity. A recording medium comprises a surface layer composed mainly of aluminum oxide particles and a lower layer having ink absorptivity, and having a Stockigt sizing degree according to JIS-P-8122 of 0 to 15 sec. An ink jet recording method performs recording by imparting small droplets of an aqueous ink to a recording medium, wherein said aqueous ink contains an acidic dye and/or a direct dye, and said recording medium comprises a surface layer composed mainly of aluminum oxide particles and a lower layer having ink absorptivity. A recording medium comprises a surface layer composed mainly of aluminum oxide particles containing polyaluminum hydroxide and/or polyaluminum chloride and a lower layer having ink absorptivity. A recording medium comprises a surface layer composed mainly of aluminum oxide particles having particle sizes of 5 .mu.

Abstract: An ink comprising an aqueous liquid medium which contains acid carbon black having a volatile content within the range of 3.5 to 8% by weight and a water-soluble resin having a weight average molecular weight within the range of 3,000 to 30,000, wherein the weight ratio of the acid carbon black to the water-soluble resin is within the range of 3:1 to 10:1. The present invention also relates to an ink jet recording method, and ink jet device, an ink cartridge and an ink jet recording apparatus which uses the ink.

Abstract: A material for a liquid ejection ink-jet recording apparatus that is contactable with a recording liquid wherein the material is formed by a cured substance made from cyclic aliphatic epoxy resin and acid anhydride. The material is used in producing a liquid ejection recording head. The head is included in a liquid recording apparatus.